Abstract
We report the 2-year results for a prospective randomized trial comparing highly cross-linked with standard polyethylene in total hip replacements. In our study, 46 hips were available for radiographic analysis at 2- and 3-year follow-up. Femoral bearings were 28-mm cobalt chrome with the polyethylene insert randomly selected at the time of implantation to be highly cross-linked polyethylene (Crossfire; Stryker Howmedica Osteonics, Allendale, NJ) or standard polyethylene (N2/Vac, Stryker Howmedica Osteonics). Polyethylene wear rates were measured based on anterior-posterior (AP) and lateral pelvis radiographs at 6 weeks and at yearly intervals using a validated computer-assisted edge-detection method. Wear rates between the 2 groups were compared using the nonparametric Mann-Whitney test at the 95% level. A significant reduction in 2- and 3-dimensional linear wear rates (42% and 50%) was found in the highly cross-linked group (P = .001 and P = .005).
Original language | English (US) |
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Pages (from-to) | 55-59 |
Number of pages | 5 |
Journal | Journal of Arthroplasty |
Volume | 18 |
Issue number | 7 SUPPL. 1 |
DOIs | |
State | Published - Jan 1 2003 |
Keywords
- Arthroplasty
- Cross-linked
- Hip
- Polyethylene
- Wear
ASJC Scopus subject areas
- Orthopedics and Sports Medicine
- Surgery